The basic things we should know are: Karma is the root cause of our birth. The root cause of
Karma is sorrow. Ignorance is the cause of sorrow. Ignorance itself is the result of Bhrama (the delusion which makes one regard the real as unreal and the unreal as real). And as long as Bhrama persists, the Brahman cannot be recognised. When we are rid of this delusion, then sorrow will cease. When sorrow goes, ignorance disappears. (SSS Vol.18, p. 25)
You have been born for one purpose: to die. That is to say, to kill the ‘I.’ If bhrama (delusion) dies, you become Brahman (the Supreme Spirit), or rather, you know that you are Brahman. (SSS Vol.2, p. 131)